/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-bg: #0d0f14;
            --color-bg-alt: #14181f;
            --color-bg-card: #1a1f28;
            --color-bg-input: #1e2430;
            --color-primary: #c8944a;
            --color-primary-hover: #d9a85e;
            --color-primary-light: #e8d5b0;
            --color-accent: #7a6a5a;
            --color-text: #e8e0d4;
            --color-text-strong: #f5efe8;
            --color-text-muted: #9a8e80;
            --color-text-dim: #6a6055;
            --color-border: #2a2530;
            --color-border-light: #3a3440;
            --color-danger: #c04a4a;
            --color-success: #5a9a6a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.4);
            --shadow-lg: 0 12px 48px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 30px rgba(200,148,74,0.08);
            --font-display: 'Playfair Display', 'Times New Roman', serif;
            --font-body: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-chinese: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 7rem;
            --max-width: 1200px;
            --header-height: 72px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-body);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 16px;
            font-weight: 400;
            min-height: 100vh;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--color-primary-hover); }
        a:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 4px; border-radius: 2px; }
        button { cursor: pointer; font-family: inherit; font-size: inherit; border: none; background: none; color: inherit; transition: var(--transition); }
        button:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 4px; border-radius: 4px; }
        input, textarea { font-family: inherit; font-size: inherit; color: var(--color-text); background: var(--color-bg-input); border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 0.7rem 1rem; transition: var(--transition); width: 100%; }
        input:focus, textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(200,148,74,0.15); }
        input::placeholder, textarea::placeholder { color: var(--color-text-dim); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); color: var(--color-text-strong); line-height: 1.25; font-weight: 600; }
        h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); }
        h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
        h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; }
        p:last-child { margin-bottom: 0; }
        .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-sm); }

        /* ===== 分隔装饰 ===== */
        .section-divider { height: 1px; background: linear-gradient(90deg, transparent, var(--color-border-light), transparent); margin: 0; border: none; }
        .ornament { display: flex; align-items: center; justify-content: center; gap: 0.75rem; margin-top: var(--spacing-sm); }
        .ornament::before, .ornament::after { content: ''; height: 1px; width: 40px; background: var(--color-primary); opacity: 0.4; }
        .ornament i { color: var(--color-primary); font-size: 0.8rem; opacity: 0.6; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(13, 15, 20, 0.88);
            backdrop-filter: blur(18px) saturate(1.2);
            border-bottom: 1px solid var(--color-border);
            height: var(--header-height);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(13, 15, 20, 0.96); box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: var(--header-height); gap: var(--spacing-sm);
        }
        .logo { display: flex; align-items: center; gap: 0.6rem; flex-shrink: 0; }
        .logo-icon {
            font-size: 1.6rem; color: var(--color-primary);
            font-family: var(--font-display); line-height: 1;
        }
        .logo-text {
            font-family: var(--font-display); font-size: 1.35rem; font-weight: 700;
            color: var(--color-text-strong); letter-spacing: 0.02em;
        }
        .logo-text span { color: var(--color-primary); }

        .main-nav { display: flex; align-items: center; gap: 0.25rem; }
        .main-nav a {
            display: block; padding: 0.5rem 1.1rem; border-radius: var(--radius-sm);
            font-size: 0.9rem; font-weight: 500; color: var(--color-text-muted);
            transition: var(--transition); position: relative;
        }
        .main-nav a:hover { color: var(--color-text-strong); background: rgba(255,255,255,0.04); }
        .main-nav a.active { color: var(--color-primary); background: rgba(200,148,74,0.08); }
        .main-nav a.active::after {
            content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
            width: 20px; height: 2px; background: var(--color-primary); border-radius: 1px;
        }

        .header-actions { display: flex; align-items: center; gap: 0.75rem; flex-shrink: 0; }
        .search-box {
            display: flex; align-items: center; background: var(--color-bg-input);
            border: 1px solid var(--color-border); border-radius: var(--radius-sm);
            overflow: hidden; transition: var(--transition);
        }
        .search-box:focus-within { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(200,148,74,0.1); }
        .search-box input {
            background: transparent; border: none; padding: 0.4rem 0.8rem;
            width: 140px; font-size: 0.85rem; color: var(--color-text);
        }
        .search-box input::placeholder { color: var(--color-text-dim); }
        .search-box button {
            padding: 0.4rem 0.8rem; color: var(--color-text-muted); font-size: 0.85rem;
            background: transparent; border: none; border-left: 1px solid var(--color-border);
        }
        .search-box button:hover { color: var(--color-primary); }

        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
            padding: 0.55rem 1.5rem; border-radius: var(--radius-sm); font-weight: 600;
            font-size: 0.9rem; transition: var(--transition); border: 1px solid transparent;
            white-space: nowrap; line-height: 1.4;
        }
        .btn-outline {
            color: var(--color-text-muted); border-color: var(--color-border);
            background: transparent;
        }
        .btn-outline:hover { color: var(--color-text-strong); border-color: var(--color-text-muted); background: rgba(255,255,255,0.03); }
        .btn-primary {
            background: var(--color-primary); color: #0d0f14; border-color: var(--color-primary);
            font-weight: 700;
        }
        .btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); transform: translateY(-1px); box-shadow: var(--shadow-glow); }
        .btn-secondary {
            background: transparent; color: var(--color-primary); border-color: var(--color-primary);
        }
        .btn-secondary:hover { background: rgba(200,148,74,0.1); transform: translateY(-1px); }
        .btn-lg { padding: 0.8rem 2.4rem; font-size: 1rem; border-radius: var(--radius-md); }

        .mobile-toggle {
            display: none; font-size: 1.6rem; color: var(--color-text);
            padding: 0.4rem; background: none; border: none;
        }
        .mobile-toggle:hover { color: var(--color-primary); }

        /* ===== Hero ===== */
        .hero {
            position: relative; min-height: 92vh; display: flex; align-items: center;
            padding: var(--spacing-xl) 0; margin-top: var(--header-height);
            background: var(--color-bg);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35; filter: saturate(0.7) brightness(0.6);
            z-index: 0;
        }
        .hero-bg::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(13,15,20,0.85) 30%, rgba(13,15,20,0.4) 70%, rgba(13,15,20,0.85) 100%);
        }
        .hero .container { position: relative; z-index: 1; }
        .hero-content { max-width: 680px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 0.5rem;
            padding: 0.35rem 1rem; border: 1px solid var(--color-border-light);
            border-radius: 50px; font-size: 0.8rem; color: var(--color-text-muted);
            background: rgba(255,255,255,0.03); margin-bottom: var(--spacing-md);
            letter-spacing: 0.04em;
        }
        .hero-badge i { color: var(--color-primary); font-size: 0.7rem; }
        .hero h1 { margin-bottom: 0.5rem; }
        .hero h1 em { font-style: italic; color: var(--color-primary); }
        .hero-sub {
            font-size: clamp(1.05rem, 1.8vw, 1.3rem); color: var(--color-text-muted);
            max-width: 520px; margin: var(--spacing-sm) 0 var(--spacing-md);
            line-height: 1.7;
        }
        .hero-actions { display: flex; align-items: center; gap: var(--spacing-sm); flex-wrap: wrap; margin-top: var(--spacing-sm); }
        .hero-stats {
            display: flex; gap: var(--spacing-lg); margin-top: var(--spacing-lg);
            padding-top: var(--spacing-md); border-top: 1px solid var(--color-border);
        }
        .hero-stat-item { text-align: left; }
        .hero-stat-item .num {
            font-family: var(--font-display); font-size: 2rem; font-weight: 700;
            color: var(--color-text-strong); line-height: 1.1;
        }
        .hero-stat-item .num span { color: var(--color-primary); }
        .hero-stat-item .label { font-size: 0.8rem; color: var(--color-text-dim); margin-top: 0.2rem; }

        /* ===== 通用板块 ===== */
        .section { padding: var(--spacing-xl) 0; }
        .section-header { text-align: center; margin-bottom: var(--spacing-lg); }
        .section-header h2 { margin-bottom: 0.6rem; }
        .section-header .subtitle { color: var(--color-text-muted); max-width: 560px; margin: 0 auto; font-size: 1.05rem; }
        .section-header .ornament { margin-top: 0.5rem; }

        /* ===== 核心说明 ===== */
        .intro-grid {
            display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-lg);
            align-items: center;
        }
        .intro-text h2 { margin-bottom: var(--spacing-sm); }
        .intro-text p { color: var(--color-text-muted); font-size: 1.05rem; }
        .intro-text .feature-list { margin-top: var(--spacing-md); }
        .intro-text .feature-list li {
            display: flex; align-items: flex-start; gap: 0.8rem; padding: 0.6rem 0;
            border-bottom: 1px solid var(--color-border);
        }
        .intro-text .feature-list li:last-child { border-bottom: none; }
        .intro-text .feature-list i { color: var(--color-primary); margin-top: 0.25rem; font-size: 0.9rem; flex-shrink: 0; }
        .intro-text .feature-list strong { color: var(--color-text-strong); font-weight: 600; }
        .intro-image {
            border-radius: var(--radius-lg); overflow: hidden;
            border: 1px solid var(--color-border); box-shadow: var(--shadow-lg);
            background: var(--color-bg-card);
        }
        .intro-image img { width: 100%; height: 360px; object-fit: cover; transition: var(--transition); }
        .intro-image:hover img { transform: scale(1.03); }

        /* ===== 分类卡片 ===== */
        .category-grid {
            display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }
        .category-card {
            position: relative; border-radius: var(--radius-lg); overflow: hidden;
            background: var(--color-bg-card); border: 1px solid var(--color-border);
            transition: var(--transition); group: true;
        }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-border-light); }
        .category-card .card-img {
            height: 200px; overflow: hidden; position: relative;
        }
        .category-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .category-card:hover .card-img img { transform: scale(1.05); }
        .category-card .card-img .overlay {
            position: absolute; inset: 0;
            background: linear-gradient(0deg, rgba(13,15,20,0.7) 0%, transparent 60%);
        }
        .category-card .card-body { padding: var(--spacing-md); }
        .category-card .card-body h3 { font-size: 1.2rem; margin-bottom: 0.4rem; }
        .category-card .card-body h3 a { color: var(--color-text-strong); }
        .category-card .card-body h3 a:hover { color: var(--color-primary); }
        .category-card .card-body p { color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 0; }
        .category-card .card-footer {
            padding: 0 var(--spacing-md) var(--spacing-md); display: flex;
            align-items: center; justify-content: space-between;
        }
        .category-card .tag {
            display: inline-block; padding: 0.2rem 0.7rem; border-radius: 50px;
            font-size: 0.75rem; background: rgba(200,148,74,0.1); color: var(--color-primary);
            border: 1px solid rgba(200,148,74,0.2);
        }
        .category-card .card-link { color: var(--color-text-muted); font-size: 0.85rem; font-weight: 500; }
        .category-card .card-link i { transition: var(--transition); }
        .category-card:hover .card-link { color: var(--color-primary); }
        .category-card:hover .card-link i { transform: translateX(4px); }

        /* ===== 最新资讯列表 ===== */
        .news-list { display: flex; flex-direction: column; gap: var(--spacing-sm); }
        .news-item {
            display: flex; align-items: stretch; gap: var(--spacing-md);
            background: var(--color-bg-card); border-radius: var(--radius-md);
            border: 1px solid var(--color-border); padding: var(--spacing-md);
            transition: var(--transition);
        }
        .news-item:hover { border-color: var(--color-border-light); box-shadow: var(--shadow-sm); transform: translateX(3px); }
        .news-item .news-meta { flex-shrink: 0; min-width: 100px; }
        .news-item .news-meta .cat {
            display: inline-block; padding: 0.2rem 0.7rem; border-radius: 50px;
            font-size: 0.75rem; background: rgba(200,148,74,0.1); color: var(--color-primary);
            border: 1px solid rgba(200,148,74,0.2); margin-bottom: 0.3rem;
        }
        .news-item .news-meta .date { font-size: 0.8rem; color: var(--color-text-dim); display: block; }
        .news-item .news-body { flex: 1; min-width: 0; }
        .news-item .news-body h3 { font-size: 1.1rem; margin-bottom: 0.3rem; }
        .news-item .news-body h3 a { color: var(--color-text-strong); }
        .news-item .news-body h3 a:hover { color: var(--color-primary); }
        .news-item .news-body p { color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-empty {
            text-align: center; padding: var(--spacing-lg); color: var(--color-text-dim);
            background: var(--color-bg-card); border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }
        .news-empty i { font-size: 2rem; margin-bottom: var(--spacing-sm); display: block; color: var(--color-border-light); }

        /* ===== 数据 / 流程 ===== */
        .stats-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md);
        }
        .stat-card {
            text-align: center; padding: var(--spacing-md); background: var(--color-bg-card);
            border-radius: var(--radius-md); border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--color-border-light); }
        .stat-card .stat-icon { font-size: 2rem; color: var(--color-primary); margin-bottom: var(--spacing-sm); }
        .stat-card .stat-num { font-family: var(--font-display); font-size: 2.4rem; font-weight: 700; color: var(--color-text-strong); }
        .stat-card .stat-num span { color: var(--color-primary); }
        .stat-card .stat-label { font-size: 0.85rem; color: var(--color-text-muted); margin-top: 0.3rem; }

        .flow-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md);
            margin-top: var(--spacing-sm);
        }
        .flow-step {
            text-align: center; padding: var(--spacing-md); position: relative;
            background: var(--color-bg-card); border-radius: var(--radius-md);
            border: 1px solid var(--color-border); transition: var(--transition);
        }
        .flow-step:hover { border-color: var(--color-border-light); box-shadow: var(--shadow-sm); }
        .flow-step .step-num {
            width: 48px; height: 48px; border-radius: 50%;
            background: rgba(200,148,74,0.12); border: 1px solid rgba(200,148,74,0.25);
            display: flex; align-items: center; justify-content: center;
            font-family: var(--font-display); font-size: 1.2rem; font-weight: 700;
            color: var(--color-primary); margin: 0 auto var(--spacing-sm);
        }
        .flow-step h4 { font-size: 1.05rem; margin-bottom: 0.4rem; }
        .flow-step p { font-size: 0.88rem; color: var(--color-text-muted); margin-bottom: 0; }

        /* ===== 特色内容 ===== */
        .featured-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md);
        }
        .featured-card {
            background: var(--color-bg-card); border-radius: var(--radius-md);
            border: 1px solid var(--color-border); overflow: hidden;
            transition: var(--transition);
        }
        .featured-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-border-light); }
        .featured-card .fc-img { height: 180px; overflow: hidden; }
        .featured-card .fc-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .featured-card:hover .fc-img img { transform: scale(1.05); }
        .featured-card .fc-body { padding: var(--spacing-md); }
        .featured-card .fc-body h4 { font-size: 1.05rem; margin-bottom: 0.4rem; font-family: var(--font-body); font-weight: 600; }
        .featured-card .fc-body p { font-size: 0.88rem; color: var(--color-text-muted); margin-bottom: 0; }
        .featured-card .fc-tag {
            display: inline-block; padding: 0.15rem 0.6rem; border-radius: 50px;
            font-size: 0.7rem; background: rgba(200,148,74,0.08); color: var(--color-primary-light);
            border: 1px solid rgba(200,148,74,0.15); margin-bottom: 0.5rem;
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--spacing-sm); }
        .faq-item {
            background: var(--color-bg-card); border-radius: var(--radius-md);
            border: 1px solid var(--color-border); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--color-border-light); }
        .faq-question {
            display: flex; align-items: center; justify-content: space-between;
            padding: var(--spacing-md); cursor: pointer; font-weight: 500;
            color: var(--color-text-strong); font-size: 1rem; gap: var(--spacing-sm);
            background: none; border: none; width: 100%; text-align: left;
        }
        .faq-question i { color: var(--color-primary); transition: var(--transition); font-size: 0.85rem; flex-shrink: 0; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: max-height 0.5s ease, padding 0.3s ease;
            padding: 0 var(--spacing-md);
        }
        .faq-item.open .faq-answer {
            max-height: 300px; padding: 0 var(--spacing-md) var(--spacing-md);
        }
        .faq-answer p { color: var(--color-text-muted); font-size: 0.92rem; margin-bottom: 0; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-bg-alt); border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border); position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08; filter: saturate(0.5);
        }
        .cta-inner {
            position: relative; z-index: 1; text-align: center;
            padding: var(--spacing-xl) 0; max-width: 640px; margin: 0 auto;
        }
        .cta-inner h2 { margin-bottom: var(--spacing-sm); }
        .cta-inner p { color: var(--color-text-muted); font-size: 1.05rem; margin-bottom: var(--spacing-md); }
        .cta-inner .btn-group { display: flex; align-items: center; justify-content: center; gap: var(--spacing-sm); flex-wrap: wrap; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-alt); border-top: 1px solid var(--color-border);
            padding: var(--spacing-lg) 0 var(--spacing-md);
        }
        .footer-grid {
            display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--spacing-lg);
            padding-bottom: var(--spacing-md); border-bottom: 1px solid var(--color-border);
        }
        .footer-brand .logo { margin-bottom: var(--spacing-sm); }
        .footer-brand p { font-size: 0.88rem; color: var(--color-text-dim); max-width: 300px; }
        .footer-col h4 { font-size: 0.95rem; margin-bottom: var(--spacing-sm); font-family: var(--font-body); font-weight: 600; color: var(--color-text-strong); }
        .footer-col ul li { margin-bottom: 0.4rem; }
        .footer-col ul a { font-size: 0.88rem; color: var(--color-text-dim); }
        .footer-col ul a:hover { color: var(--color-primary); }
        .footer-bottom {
            display: flex; align-items: center; justify-content: space-between;
            padding-top: var(--spacing-md); flex-wrap: wrap; gap: var(--spacing-sm);
        }
        .footer-bottom p { font-size: 0.82rem; color: var(--color-text-dim); margin-bottom: 0; }
        .footer-bottom .social-links { display: flex; gap: var(--spacing-sm); }
        .footer-bottom .social-links a {
            width: 36px; height: 36px; border-radius: 50%;
            background: var(--color-bg-card); border: 1px solid var(--color-border);
            display: flex; align-items: center; justify-content: center;
            color: var(--color-text-dim); font-size: 0.9rem;
        }
        .footer-bottom .social-links a:hover { color: var(--color-primary); border-color: var(--color-primary); background: rgba(200,148,74,0.06); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .featured-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-md); }
            .intro-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
            .intro-image img { height: 260px; }
        }

        @media (max-width: 768px) {
            :root { --header-height: 64px; --spacing-xl: 4rem; --spacing-lg: 2.5rem; }
            .main-nav { display: none; }
            .header-actions .search-box { display: none; }
            .header-actions .btn-outline { display: none; }
            .mobile-toggle { display: block; }
            .hero { min-height: 75vh; padding: var(--spacing-lg) 0; }
            .hero-stats { flex-wrap: wrap; gap: var(--spacing-md); }
            .hero-stat-item .num { font-size: 1.5rem; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-sm); }
            .flow-grid { grid-template-columns: 1fr; gap: var(--spacing-sm); }
            .featured-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
            .footer-bottom { flex-direction: column; text-align: center; }
            .news-item { flex-direction: column; gap: var(--spacing-sm); padding: var(--spacing-sm); }
            .news-item .news-meta { min-width: auto; display: flex; align-items: center; gap: 0.5rem; }
            .category-grid { grid-template-columns: 1fr; }
            .section-header .subtitle { font-size: 0.95rem; }

            /* 移动端导航浮层 */
            .mobile-nav-open .main-nav {
                display: flex; flex-direction: column; position: fixed; top: var(--header-height);
                left: 0; right: 0; background: rgba(13,15,20,0.98); backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--color-border); padding: var(--spacing-md);
                gap: 0.25rem; z-index: 999;
            }
            .mobile-nav-open .main-nav a { padding: 0.8rem 1rem; font-size: 1rem; border-radius: var(--radius-sm); }
            .mobile-nav-open .main-nav a.active { background: rgba(200,148,74,0.08); }
            .mobile-nav-open .header-actions .search-box { display: flex; width: 100%; margin-top: var(--spacing-sm); }
            .mobile-nav-open .header-actions .search-box input { width: 100%; }
            .mobile-nav-open .header-actions .btn-outline { display: inline-flex; }
        }

        @media (max-width: 520px) {
            .hero { min-height: 70vh; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-xs); }
            .stat-card { padding: var(--spacing-sm); }
            .stat-card .stat-num { font-size: 1.8rem; }
            .cta-inner .btn-group { flex-direction: column; align-items: stretch; }
            .cta-inner .btn-group .btn { width: 100%; justify-content: center; }
            .logo-text { font-size: 1.1rem; }
            .logo-icon { font-size: 1.2rem; }
        }

        /* ===== 辅助类 ===== */
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
        .text-center { text-align: center; }
        .mt-sm { margin-top: var(--spacing-sm); }
        .mt-md { margin-top: var(--spacing-md); }
        .mb-sm { margin-bottom: var(--spacing-sm); }
        .mb-md { margin-bottom: var(--spacing-md); }

/* roulang page: article */
:root {
            --primary: #c17f4e;
            --primary-dark: #a6683d;
            --primary-light: #dda070;
            --secondary: #2d2a24;
            --bg-cream: #f5f0eb;
            --bg-dark: #2d2a24;
            --bg-card: #ffffff;
            --text-dark: #2d2a24;
            --text-muted: #8a7f75;
            --text-light: #f5f0eb;
            --border-color: #d4ccc4;
            --border-soft: #e5ddd5;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(45,42,36,0.06);
            --shadow-md: 0 6px 24px rgba(45,42,36,0.10);
            --shadow-lg: 0 12px 40px rgba(45,42,36,0.14);
            --font-body: 'Georgia', 'Noto Serif SC', 'Source Han Serif CN', serif;
            --font-heading: 'Georgia', 'Noto Serif SC', 'Source Han Serif CN', serif;
            --font-mono: 'Courier New', monospace;
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 3.5rem;
            --space-xl: 5rem;
            --max-width: 1200px;
            --content-width: 760px;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

        html { scroll-behavior: smooth; font-size: 16px; }

        body {
            font-family: var(--font-body);
            color: var(--text-dark);
            background-color: var(--bg-cream);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: var(--primary); }
        button, input, textarea { font-family: inherit; }
        ul { list-style: none; }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .container-narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ---- header / nav ---- */
        .site-header {
            background: var(--bg-dark);
            color: var(--text-light);
            border-bottom: 3px double var(--primary);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0.6rem 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }

        .logo-icon {
            font-size: 1.8rem;
            color: var(--primary);
            line-height: 1;
        }

        .logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            font-family: var(--font-heading);
            color: var(--text-light);
        }

        .logo-text span { color: var(--primary); }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.2rem;
        }

        .main-nav a {
            padding: 0.4rem 1rem;
            border: 2px solid transparent;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all 0.2s ease;
            position: relative;
            letter-spacing: 0.3px;
        }

        .main-nav a:hover {
            color: var(--primary-light);
            border-color: var(--primary);
        }

        .main-nav a.active {
            color: var(--primary);
            border-color: var(--primary);
            background: rgba(193,127,78,0.10);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: var(--radius-sm);
            padding: 0.3rem 0.8rem;
            transition: border-color 0.2s;
        }

        .search-box:focus-within {
            border-color: var(--primary);
        }

        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-light);
            font-size: 0.85rem;
            padding: 0.2rem 0;
            width: 120px;
        }

        .search-box input::placeholder {
            color: rgba(255,255,255,0.4);
        }

        .search-box i {
            color: rgba(255,255,255,0.4);
            font-size: 0.85rem;
            margin-right: 0.4rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.2rem;
            font-size: 0.9rem;
            font-weight: 600;
            border: 2px solid var(--primary);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all 0.2s ease;
            background: transparent;
            color: var(--primary);
            letter-spacing: 0.3px;
        }

        .btn:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

        .btn:active {
            transform: translateY(0);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-size: 1.2rem;
            padding: 0.3rem 0.6rem;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background 0.2s;
        }

        .mobile-toggle:hover {
            background: rgba(193,127,78,0.15);
        }

        /* ---- article banner ---- */
        .article-banner {
            position: relative;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            padding: var(--space-lg) 0 var(--space-md);
            min-height: 240px;
            display: flex;
            align-items: flex-end;
            border-bottom: 4px double var(--primary);
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(45,42,36,0.82) 0%, rgba(45,42,36,0.40) 100%);
        }

        .article-banner .container-narrow {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .article-banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
            align-items: center;
            margin-bottom: 0.6rem;
        }

        .article-banner-category {
            display: inline-block;
            padding: 0.15rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            border: 2px solid var(--primary);
            color: var(--primary);
            background: rgba(193,127,78,0.12);
            border-radius: var(--radius-sm);
        }

        .article-banner-date {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.65);
            letter-spacing: 0.3px;
        }

        .article-banner h1 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-light);
            line-height: 1.3;
            font-family: var(--font-heading);
            max-width: 90%;
            text-shadow: 0 2px 12px rgba(0,0,0,0.3);
            padding-bottom: 0.2rem;
        }

        /* ---- article body ---- */
        .article-section {
            padding: var(--space-lg) 0;
        }

        .article-body {
            background: var(--bg-card);
            border: 2px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: var(--space-md) var(--space-md);
            box-shadow: var(--shadow-sm);
        }

        .article-body h1, .article-body h2, .article-body h3, .article-body h4 {
            font-family: var(--font-heading);
            color: var(--text-dark);
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            line-height: 1.4;
        }

        .article-body h2 { font-size: 1.6rem; border-left: 4px solid var(--primary); padding-left: 0.8rem; }
        .article-body h3 { font-size: 1.25rem; }
        .article-body p { margin-bottom: 1.2em; font-size: 1.05rem; line-height: 1.8; color: var(--text-dark); }
        .article-body p:last-child { margin-bottom: 0; }
        .article-body ul, .article-body ol { margin: 1em 0; padding-left: 1.8em; }
        .article-body li { margin-bottom: 0.4em; font-size: 1.05rem; line-height: 1.7; }
        .article-body ul li { list-style: disc; }
        .article-body ol li { list-style: decimal; }
        .article-body blockquote {
            margin: 1.5em 0;
            padding: 0.8rem 1.2rem;
            border-left: 4px solid var(--primary);
            background: rgba(193,127,78,0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-muted);
        }
        .article-body blockquote p { margin-bottom: 0; }
        .article-body a { color: var(--primary); border-bottom: 1px solid transparent; }
        .article-body a:hover { border-bottom-color: var(--primary); }
        .article-body img { border-radius: var(--radius-sm); margin: 1.5em 0; border: 2px solid var(--border-soft); }

        .article-footer-meta {
            margin-top: var(--space-md);
            padding-top: var(--space-sm);
            border-top: 2px solid var(--border-soft);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .tag {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            font-size: 0.75rem;
            font-weight: 500;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            background: var(--bg-cream);
            color: var(--text-muted);
            transition: all 0.2s;
        }

        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(193,127,78,0.06);
        }

        .share-links {
            display: flex;
            gap: 0.5rem;
            align-items: center;
        }

        .share-links span {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-right: 0.3rem;
        }

        .share-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border: 2px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: all 0.2s;
        }

        .share-links a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(193,127,78,0.06);
            transform: translateY(-2px);
        }

        /* ---- not found ---- */
        .not-found-box {
            text-align: center;
            padding: var(--space-xl) var(--space-md);
            background: var(--bg-card);
            border: 2px solid var(--border-soft);
            border-radius: var(--radius-md);
        }

        .not-found-box i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: var(--space-sm);
            display: block;
        }

        .not-found-box h2 {
            font-size: 1.6rem;
            color: var(--text-dark);
            margin-bottom: 0.8rem;
        }

        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: var(--space-sm);
        }

        /* ---- related posts ---- */
        .related-section {
            background: var(--bg-cream);
            padding: var(--space-lg) 0;
            border-top: 2px solid var(--border-soft);
            border-bottom: 2px solid var(--border-soft);
        }

        .related-section .section-title {
            font-size: 1.4rem;
            font-weight: 700;
            font-family: var(--font-heading);
            text-align: center;
            margin-bottom: var(--space-md);
            position: relative;
            display: inline-block;
            left: 50%;
            transform: translateX(-50%);
        }

        .related-section .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--primary);
            margin: 0.4rem auto 0;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 1.2rem;
        }

        .related-card {
            background: var(--bg-card);
            border: 2px solid var(--border-soft);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .related-card-img {
            width: 100%;
            height: 150px;
            object-fit: cover;
            border-bottom: 2px solid var(--border-soft);
        }

        .related-card-body {
            padding: 0.8rem 1rem 1rem;
        }

        .related-card-body .related-cat {
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            display: inline-block;
            margin-bottom: 0.3rem;
            border: 1px solid var(--primary);
            padding: 0.05rem 0.5rem;
            border-radius: var(--radius-sm);
        }

        .related-card-body h3 {
            font-size: 0.95rem;
            font-weight: 600;
            line-height: 1.4;
            font-family: var(--font-heading);
            color: var(--text-dark);
            transition: color 0.2s;
        }

        .related-card:hover .related-card-body h3 {
            color: var(--primary);
        }

        .related-card-body .related-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        /* ---- CTA ---- */
        .cta-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: var(--space-lg) 0;
            text-align: center;
            position: relative;
            border-top: 4px double var(--primary);
            border-bottom: 4px double var(--primary);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(45,42,36,0.78);
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-light);
            font-family: var(--font-heading);
            margin-bottom: 0.6rem;
        }

        .cta-section p {
            color: rgba(255,255,255,0.75);
            max-width: 560px;
            margin: 0 auto var(--space-sm);
            font-size: 1rem;
        }

        .cta-section .btn {
            font-size: 1rem;
            padding: 0.7rem 2rem;
            border-width: 2px;
        }

        /* ---- footer ---- */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: var(--space-lg) 0 var(--space-sm);
            border-top: 3px double var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: var(--space-md);
        }

        .footer-brand .logo {
            margin-bottom: 0.8rem;
        }

        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.65);
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 0.8rem;
            font-family: var(--font-heading);
            letter-spacing: 0.3px;
        }

        .footer-col ul li {
            margin-bottom: 0.4rem;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            transition: color 0.2s;
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.10);
            padding-top: var(--space-sm);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }

        .footer-bottom p {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.40);
        }

        .social-links {
            display: flex;
            gap: 0.6rem;
        }

        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border: 2px solid rgba(255,255,255,0.15);
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.45);
            font-size: 0.95rem;
            transition: all 0.2s;
        }

        .social-links a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(193,127,78,0.10);
            transform: translateY(-2px);
        }

        /* ---- responsive ---- */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-brand { grid-column: 1 / -1; }
            .article-banner h1 { font-size: 1.8rem; }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }

            .main-nav {
                order: 3;
                flex-basis: 100%;
                justify-content: center;
                padding-top: 0.4rem;
                border-top: 1px solid rgba(255,255,255,0.08);
                margin-top: 0.2rem;
                flex-wrap: wrap;
            }

            .main-nav a {
                font-size: 0.8rem;
                padding: 0.3rem 0.7rem;
            }

            .nav-actions .search-box {
                display: none;
            }

            .nav-actions .btn span {
                display: none;
            }

            .article-banner { padding: var(--space-md) 0; min-height: 180px; }
            .article-banner h1 { font-size: 1.5rem; max-width: 100%; }
            .article-body { padding: var(--space-sm); }
            .article-body p { font-size: 0.95rem; }
            .related-grid { grid-template-columns: 1fr 1fr; }
            .cta-section h2 { font-size: 1.4rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.2rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .share-links { margin-top: 0.5rem; }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 1rem; }
            .header-inner { gap: 0.4rem; }
            .logo-text { font-size: 1rem; }
            .logo-icon { font-size: 1.4rem; }
            .main-nav a { font-size: 0.75rem; padding: 0.2rem 0.5rem; }
            .btn { font-size: 0.8rem; padding: 0.4rem 0.8rem; }
            .article-banner h1 { font-size: 1.2rem; }
            .article-body h2 { font-size: 1.2rem; }
            .related-grid { grid-template-columns: 1fr; }
            .cta-section h2 { font-size: 1.2rem; }
            .cta-section p { font-size: 0.9rem; }
            .article-banner-meta { gap: 0.4rem 0.8rem; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #b87333;
            --color-primary-light: #d4934a;
            --color-primary-dark: #8a5924;
            --color-secondary: #2d5a5a;
            --color-secondary-light: #3d7a7a;
            --color-secondary-dark: #1e3e3e;
            --color-bg: #f5efe8;
            --color-bg-alt: #ede4d9;
            --color-bg-dark: #1e2e2e;
            --color-bg-card: #faf6f0;
            --color-text: #3d2e1e;
            --color-text-light: #7a6a5a;
            --color-text-lighter: #a99a8a;
            --color-text-on-dark: #ede4d9;
            --color-border: #d4c5b5;
            --color-border-light: #e8ddd0;
            --color-shadow: rgba(0, 0, 0, 0.07);
            --color-shadow-hover: rgba(0, 0, 0, 0.14);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px var(--color-shadow);
            --shadow-md: 0 6px 20px var(--color-shadow);
            --shadow-lg: 0 12px 36px var(--color-shadow-hover);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-serif: 'Georgia', 'Noto Serif SC', 'Songti SC', serif;
            --transition: 0.28s cubic-bezier(0.34, 0.56, 0.64, 1);
            --spacing-section: 5rem;
            --spacing-block: 3rem;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--color-primary-light);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ===== 标题层级 ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
        }

        h1 {
            font-size: clamp(2.4rem, 6.5vw, 4rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: clamp(1.3rem, 2.5vw, 1.75rem);
        }
        h4 {
            font-size: clamp(1.1rem, 1.8vw, 1.35rem);
        }

        .section-title {
            text-align: center;
            margin-bottom: 2.5rem;
            position: relative;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--color-primary);
            margin: 1rem auto 0;
            border-radius: 2px;
        }
        .section-title-sub {
            text-align: center;
            color: var(--color-text-light);
            font-size: 1.05rem;
            max-width: 640px;
            margin: -1.5rem auto 3rem;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius-xl);
            transition: all var(--transition);
            border: 2px solid transparent;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 3px solid var(--color-primary-light);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(184, 115, 51, 0.3);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(184, 115, 51, 0.2);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
            border-color: var(--color-bg-dark);
        }
        .btn-dark:hover {
            background: var(--color-secondary-dark);
            border-color: var(--color-secondary-dark);
            color: var(--color-text-on-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30, 46, 46, 0.3);
        }

        .btn-sm {
            padding: 0.5rem 1.25rem;
            font-size: 0.85rem;
        }

        /* ===== 标签/徽章 ===== */
        .badge {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            border-radius: var(--radius-xl);
            background: var(--color-bg-alt);
            color: var(--color-text-light);
            border: 1px solid var(--color-border-light);
        }
        .badge-primary {
            background: rgba(184, 115, 51, 0.12);
            color: var(--color-primary-dark);
            border-color: rgba(184, 115, 51, 0.2);
        }
        .badge-secondary {
            background: rgba(45, 90, 90, 0.12);
            color: var(--color-secondary-dark);
            border-color: rgba(45, 90, 90, 0.2);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(245, 239, 232, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-height);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(245, 239, 232, 0.97);
            box-shadow: 0 2px 20px var(--color-shadow);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 1rem;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }
        .logo-icon {
            font-size: 1.6rem;
            color: var(--color-primary);
        }
        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.02em;
        }
        .logo-text span {
            color: var(--color-primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .main-nav::-webkit-scrollbar {
            display: none;
        }
        .main-nav a {
            padding: 0.45rem 1rem;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-light);
            border-radius: var(--radius-xl);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            color: var(--color-text);
            background: rgba(0, 0, 0, 0.04);
        }
        .main-nav a.active {
            color: #fff;
            background: var(--color-primary);
            font-weight: 600;
        }
        .main-nav a.active:hover {
            background: var(--color-primary-dark);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--color-bg-alt);
            border-radius: var(--radius-xl);
            padding: 0 0.8rem;
            border: 1px solid var(--color-border-light);
            transition: border var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--color-primary);
            background: #fff;
        }
        .header-search input {
            background: none;
            border: none;
            padding: 0.4rem 0.5rem;
            font-size: 0.85rem;
            color: var(--color-text);
            outline: none;
            min-width: 120px;
            width: 140px;
        }
        .header-search input::placeholder {
            color: var(--color-text-lighter);
        }
        .header-search button {
            color: var(--color-text-light);
            font-size: 0.9rem;
            padding: 0.3rem;
            transition: color var(--transition);
        }
        .header-search button:hover {
            color: var(--color-primary);
        }

        .header-btn {
            padding: 0.45rem 1.25rem;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: var(--radius-xl);
            background: var(--color-primary);
            color: #fff;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .header-btn:hover {
            background: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(184, 115, 51, 0.3);
        }

        .mobile-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--color-text);
            padding: 0.3rem;
            background: none;
            border: none;
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            padding: calc(var(--header-height) + 3rem) 0 4rem;
            background: var(--color-bg-dark) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            position: relative;
            isolation: isolate;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 46, 46, 0.88) 40%, rgba(30, 46, 46, 0.60) 80%);
            z-index: 0;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
            width: 100%;
        }
        .category-hero h1 {
            color: var(--color-text-on-dark);
            max-width: 720px;
            font-weight: 800;
        }
        .category-hero h1 .highlight {
            color: var(--color-primary-light);
        }
        .category-hero .hero-desc {
            color: var(--color-text-on-dark);
            font-size: 1.15rem;
            max-width: 560px;
            margin-top: 1.2rem;
            opacity: 0.85;
            line-height: 1.7;
        }
        .category-hero .hero-actions {
            margin-top: 2rem;
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .hero-badge {
            display: inline-block;
            padding: 0.3rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-primary-light);
            background: rgba(184, 115, 51, 0.18);
            border-radius: var(--radius-xl);
            border: 1px solid rgba(184, 115, 51, 0.25);
            margin-bottom: 1rem;
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: var(--spacing-section) 0;
        }
        .section-block-alt {
            background: var(--color-bg-alt);
        }
        .section-block-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }
        .section-block-dark .section-title {
            color: var(--color-text-on-dark);
        }
        .section-block-dark .section-title::after {
            background: var(--color-primary-light);
        }
        .section-block-dark .section-title-sub {
            color: rgba(237, 228, 217, 0.75);
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            padding: 1.75rem;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            margin: -1.75rem -1.75rem 1.25rem;
            width: calc(100% + 3.5rem);
        }
        .card h3 {
            margin-bottom: 0.6rem;
        }
        .card p {
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .card-tags {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
            margin-top: 1rem;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            margin-top: 1rem;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            transition: gap var(--transition);
        }
        .card-link:hover {
            gap: 0.7rem;
            color: var(--color-primary-dark);
        }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        /* ===== 图文区块 ===== */
        .media-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .media-block.reverse {
            direction: rtl;
        }
        .media-block.reverse>* {
            direction: ltr;
        }
        .media-block .media-content h2 {
            margin-bottom: 1rem;
        }
        .media-block .media-content p {
            color: var(--color-text-light);
            font-size: 1.05rem;
            line-height: 1.7;
            margin-bottom: 1.2rem;
        }
        .media-block .media-image img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }

        /* ===== 数据/统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-primary-light);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--color-text-lighter);
            margin-top: 0.3rem;
        }
        .section-block-dark .stat-item .stat-label {
            color: rgba(237, 228, 217, 0.6);
        }

        /* ===== 列表样式 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }
        .list-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            padding: 1.25rem 1.5rem;
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .list-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .list-item .item-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            background: rgba(184, 115, 51, 0.1);
            color: var(--color-primary);
            font-size: 1.2rem;
        }
        .list-item .item-content h4 {
            margin-bottom: 0.2rem;
        }
        .list-item .item-content p {
            color: var(--color-text-light);
            font-size: 0.9rem;
        }
        .list-item .item-meta {
            font-size: 0.8rem;
            color: var(--color-text-lighter);
            margin-top: 0.3rem;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: border var(--transition);
        }
        .faq-item.open {
            border-color: var(--color-primary);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.1rem 1.5rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            background: none;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(0, 0, 0, 0.02);
        }
        .faq-question .faq-icon {
            font-size: 1.1rem;
            color: var(--color-primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 1.5rem;
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.2rem;
        }

        /* ===== CTA ===== */
        .cta-block {
            text-align: center;
            padding: 4rem 2rem;
            background: var(--color-bg-dark) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-radius: var(--radius-lg);
            position: relative;
            isolation: isolate;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(30, 46, 46, 0.82);
            border-radius: var(--radius-lg);
            z-index: 0;
        }
        .cta-block>* {
            position: relative;
            z-index: 1;
        }
        .cta-block h2 {
            color: var(--color-text-on-dark);
            margin-bottom: 0.8rem;
        }
        .cta-block p {
            color: rgba(237, 228, 217, 0.8);
            font-size: 1.1rem;
            max-width: 540px;
            margin: 0 auto 2rem;
        }
        .cta-block .btn {
            font-size: 1.05rem;
            padding: 0.9rem 2.5rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
            padding: 4rem 0 0;
            border-top: 3px solid var(--color-primary-dark);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .logo-text {
            color: var(--color-text-on-dark);
        }
        .footer-brand p {
            color: rgba(237, 228, 217, 0.6);
            font-size: 0.9rem;
            margin-top: 0.8rem;
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: var(--color-text-on-dark);
            font-size: 0.95rem;
            margin-bottom: 1rem;
            font-weight: 600;
            letter-spacing: 0.04em;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul a {
            color: rgba(237, 228, 217, 0.55);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--color-primary-light);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 0;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .footer-bottom p {
            color: rgba(237, 228, 217, 0.4);
            font-size: 0.82rem;
        }
        .social-links {
            display: flex;
            gap: 1rem;
        }
        .social-links a {
            color: rgba(237, 228, 217, 0.4);
            font-size: 1.2rem;
            transition: all var(--transition);
        }
        .social-links a:hover {
            color: var(--color-primary-light);
            transform: translateY(-2px);
        }

        /* ===== 移动端响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .media-block {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .media-block.reverse {
                direction: ltr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 3.5rem;
                --header-height: 64px;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-bg);
                flex-direction: column;
                padding: 1rem 1.5rem 1.5rem;
                gap: 0.3rem;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-md);
                max-height: 70vh;
                overflow-y: auto;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.7rem 1rem;
                width: 100%;
                font-size: 1rem;
            }
            .main-nav a.active {
                background: var(--color-primary);
            }

            .mobile-toggle {
                display: block;
            }
            .header-search input {
                width: 100px;
                min-width: 80px;
            }
            .header-btn {
                display: none;
            }
            .header-btn.mobile-show {
                display: inline-flex;
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }

            .grid-2,
            .grid-3 {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .stat-item .stat-number {
                font-size: 2.2rem;
            }

            .category-hero {
                min-height: 320px;
                padding: calc(var(--header-height) + 2rem) 0 3rem;
            }
            .category-hero h1 {
                font-size: clamp(1.8rem, 7vw, 2.6rem);
            }
            .category-hero .hero-desc {
                font-size: 1rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-block {
                padding: 3rem 1.5rem;
            }

            .list-item {
                padding: 1rem 1.2rem;
            }
            .card {
                padding: 1.25rem;
            }
            .card-img {
                height: 160px;
                margin: -1.25rem -1.25rem 1rem;
                width: calc(100% + 2.5rem);
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 1rem;
            }
            .header-search input {
                width: 80px;
                min-width: 60px;
                font-size: 0.8rem;
            }
            .header-search {
                padding: 0 0.5rem;
            }
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .category-hero .hero-actions {
                flex-direction: column;
                gap: 0.8rem;
            }
            .category-hero .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .logo-text {
                font-size: 1.1rem;
            }
            .logo-icon {
                font-size: 1.3rem;
            }
            .section-title {
                font-size: clamp(1.5rem, 6vw, 2rem);
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .gap-1 {
            gap: 1rem;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }